Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"so chung cao snippets" » "so chung cho snippets", "so chung co snippets", "so phung cao snippets", "ho chung cao snippets", "so nhung cao snippets", "cao chung cao snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("so chung cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("so chung cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( so chung cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("so chung cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.